OCZ Vertex 4 512GB RAID0 review

A 1TB SSD RAID array with 1GB/s reads and writes, what's not to like?

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For

Excellent sequential data performance

TRIM support in RAID

Decent price

Against

Random 4K performance could be better

Reliability concerns

Firmware update introduced more bugs

The Lord giveth and the Lord taketh away. The divine benevolence in question is the belated and very much awaited arrival of TRIM support when operating SSDs in RAID arrays. It's been a serious bone of contention for solid-state RAID because it's just not advisable to run SSDs without TRIM enabled.

The TRIM command ensures that deleted data is just that. Deleted. If it's not the result can be degraded performance over time as commands to write data come up against memory cells that are marked for deletion but not empty. When that happens, the data has to be deleted before being written. That takes time and time means lower performance.

Anyway, Intel has finally come up with a storage driver that does the TRIM thing when SSDs are obscured behind a RAID array. Cue much rejoicing.

However, the new driver only applies to the latest 7 Series motherboard chipsets. So if, for example, you recently bought a 6 Series board, TRIMed-up RAID has been snatched away just when you thought it was yours.

We doubt there's any hardware limitation here. It could simply be Intel spurning its existing customers, as is occasionally its wont.

Now, none of this has anything directly to do with OCZ and its Vertex 4 drive in 512GB. Except we just happen to have a pair of them on hand. And, well, it's rude not to.

Unfortunately, it's here that the Almighty steps in again, because the Vertex 4 512GB in speedy RAID0 promises much, but doesn't quite deliver. Some of our benchmark results are staggering. You're looking at 1GB/s for peak reads and writes. It's the sort of massive performance we've fantasised about ever since the prospect of solid-state storage for PCs was mooted.

Elsewhere, however, things are less impressive. The results for 4K random writes are lower than we achieved for a single 256GB version of the Vertex 4 and performance in this area is arguably more critical for that 'feel' of rapid PC performance.

Making matters worse, attempting to update to the latest 1.5 firmware revision, with a view to seeing if that helped sort the ordinary 4K performance, resulted in system hangs. If that wasn't bad enough, one of the drives was throwing errors in the RAID BIOS.

The killer blow involved reports from our IT department involving failures of two Vertex 4 512GB drives. The bottom line, then, is that here in 2012, we're still waiting for SSDs to fully mature as a technology. Too many drives are still blighted by reliability and longevity concerns. And we're afraid the Vertex 4 in 512GB spec is no different.

With that in mind, we tend towards the conservative when it comes to picking SSDs. That means we can't recommend this drive. It's a shame because the raw performance looks great.

We're also fans of the work OCZ is doing in bringing the Everest 2 SSD controller chipset and firmware to market and thereby ramping up the competition with SandForce, Samsung and the rest. The Vertex 4 is promising, but OCZ really needs to tidy up its act.

Tech Specs

Product Type

Solid State Drive

Product Family

Vertex 4

Drive Interface

SATA

Drive Width

2.5"

Drive Interface Standard

SATA/600

Brand Name

OCZ Storage Solutions

Drive Type

Internal

Storage Capacity

512 GB

Maximum Read Transfer Rate

560 MBps

Maximum Write Transfer Rate

510 MBps

Height

9.3 mm

Width

69.6 mm

Depth

99.8 mm

Manufacturer

OCZ Storage Solutions, Inc.

Product Name

OCZ Vertex 4 SATA III 2.5" SSD

Product Line

Vertex 4

Manufacturer Part Number

VTX4-25SAT3-512G

Manufacturer Website Address

http://www.ocztechnology.com

Marketing Information

As the fourth generation of the legendary Vertex family, the Vertex 4 Series pushes storage performance to the max and redefines the modern day computing experience. Vertex 4 SSDs are innovatively engineered to deliver industry-leading file transfer rates and superior system responsiveness, all while providing a more durable, reliable, and energy efficient storage solution compared to traditional hard drives. Designed to take full advantage of the SATA III interface, the Vertex 4 unleashes ultimate productivity, gaming, and multimedia applications.